51827047 has 4 divisors (see below), whose sum is σ = 53227816. Its totient is φ = 50426280.

The previous prime is 51827021. The next prime is 51827053. The reversal of 51827047 is 74072815.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51827047 - 2¹⁵ = 51794279 is a prime.

It is a super-3 number, since 3×51827047³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51827077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700329 + ... + 700402.

It is an arithmetic number, because the mean of its divisors is an integer number (13306954).

Almost surely, 2^51827047 is an apocalyptic number.

51827047 is a deficient number, since it is larger than the sum of its proper divisors (1400769).

51827047 is a wasteful number, since it uses less digits than its factorization.

51827047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400768.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 51827047 is about 7199.1004299148. The cubic root of 51827047 is about 372.8368425854.

The spelling of 51827047 in words is "fifty-one million, eight hundred twenty-seven thousand, forty-seven".